Air-feeding attachment for furnaces



' H. W. WEAVER AIR FEEDING ATTACHMENT FOR FURNACES Filed Feb. 24 1922 Patented Aug. 21, 1923.

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- HARBY'W. WEAVER, or annaurown; Pennsylvania nia rnnnrno' nrra naranr For. run-nieces.

Application filed February 2 1-, 1922. Serial No. 539,005.

To all 26720772, it may concern. 7

Be it known that I, HARRY WV. WEAVER, a citizen of the United States, residing at Allentown, in the county of Lehigh: and State of Pennsylvania, have invented certain new and useful Improvements in A r- Feeding Attachments for Furnaces, of wh ch the following is a specification. 4

This invention relates to devices adapted for feeding air to a furnace by means'of an attachment mounted on the coal door of a furnace or the like, the object being to provide an improved device of this kind for the purpose'of mixing the proper aniount of air with the gases arising from the bed of fuel in order to produce perfect com bastion, as well as to pro-heat theair sup plied to the furnace. The construction of the device is such that the air is evenly dis tributed over the fire bed, whereby combustion is increased, fuel is saved and smoke is prevented as well as the escape of any unconsumed gases arising from the fuel.

The invention is illustrated in the accompanying drawings in which Fig. 1 is a front 7 attached.

and it is supported in position by nuts 9 The device comprises a pipe 8 the outer end of which is threaded and fitted through a hole in the door, as shown in Fig. 1,

respectively engaging-the inside and outside of the door plate, and by adjusting the nuts on the pipe the location of thedevice with respect to the door can be varied. At its outer end, that is on the outside of the door, the pipe is provided with a funnel 10, which may be screwed on the pipe and held by a nut 11, and this funnel acts to direct a flow of air to intake openings 12 formed in the pipe and communicating with the bore thereof. The effective inlet through these openings may be varied by adjusting a screw plug 13 which is tapped into the outer end of the pipe and controls the ports desired. 7

Fig. 2 is a plan, partly in The pipe 8 projects sufficiently within the furnace to deliver the air well within the the box, above the fuel bed therein, and said pipe opens at its lindrical super-heating chamber 14 screwed onthe end of the pipe and enclosed within. an outer cylindrical spraying chamber 15,?

"from which it is spaced, the chamber .15

air in various directions over the fuel bed.

lVhen the device is mounted on the coal door as indicatedthe draft will draw in a1r through the holes 12 and pipe 8 to the inner chamber 14: where the air will be highly heated, and will flow from said chamber through the holes 16 into the space between the cylinders, and thence be discharged through the holes 17 in :the outer cylinder overthe fuel bed. The heated air thus delivered mixeswith the gases arising from the fuel, and being supplied-in proper amount will produce a perfect-combustion and prevent the waste of gases through the stack or into the house. The air is intensely heated before it is sprayedror distributed,

inner end into a cy- Y over the fire bed and consequently will give 1 effective combustion. The pipe 8 will bei long enough to position the distributing head over aihot part of the fuel bed, instead of just inside the door. The discharge holes in the inner chamber are preferably placed in the upper, lower and rear sides thereof, so that the air will have topass partly around in the space between the cylinders before it is distributed through the outer chamber. In this way effective heating and uniform distribution of the air is accomplished. f

The other advantages of the device will be apparent to those invention is not limited to the particular 1 the pip'e'having air inlet openings in the skilled in the art and the side walls thereof, a screw plug in the outer screwed on the inner end of said pipe, in- 10 end of the pipe, adjustable to open or close side of said outer chamber.

said openings, a funnel shaped air collector In testimony whereof, I afiix my signature screwed on the outside of the pipe, bein presence of two witnesses.

tween said Openings and the door, nuts on the pipe, clamping the same to the door, an HARRY W. WEAVER. outer perforated chamber having screw l Vitnesses:

V threaded engagement on the pipe, inside the EDWIN H. ,STINE,

door, and an inner perforated chamber, also MARGARET H. MAGER. 

